107 tools · 9 categories

AI agents: the best tools that do tasks for you

The best AI agents to research, create documents, browse the web and automate processes: what each does, price and free version.

Our quick pick

1

Genspark

Freemium

Ask for a result and it delivers it done: slides, spreadsheets, documents or research with sources.

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2

Manus

Freemium

An agent that browses the web and completes multi-step tasks on its own, with daily free credits.

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3

n8n

Freemium

For always-on agents: connect your apps and automate business processes with AI. Free when self-hosted.

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All options, ranked

Filters
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What it costs
Where it runs
More filters: platform, level and use
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What it is good for

8 tools

ChatGPT

Freemium
DOA score: 93/100

OpenAI's general assistant for writing, reasoning, file analysis and coding. The most familiar starting point for almost any AI task.

Where it runs: Browser · Windows · Mac · Android · iPhone / iPad

Codex

Freemium
DOA score: 79/100

OpenAI coding agent that reads and changes code on your machine from the terminal, with editor options too. A fit if you already use ChatGPT.

Where it runs: Windows · Mac · Linux

Genspark

Freemium
DOA score: 77/100

AI super agent that researches the web and delivers finished work: slides, spreadsheets, documents and reports from a single request.

Where it runs: Browser · Windows · Mac · Android · iPhone / iPad

n8n

Freemium
DOA score: 74/100

Automate tasks by connecting hundreds of apps and build AI agents in a visual workflow editor. Self-host it or use the cloud.

Where it runs: Browser · Windows · Mac · Linux

Comet

Free
DOA score: 72/100

Perplexity’s browser with an assistant next to the tab: it summarises the page and searches with sources from what you have open. Made for deep research.

Where it runs: Windows · Mac

Manus

Freemium
DOA score: 66/100

An agent that takes a brief and delivers a finished thing. Independent again since September 2026, after Meta's purchase was unwound. Serious use is paid in credits.

Where it runs: Browser

What an AI agent is (and how it differs from a chat)

A chat answers. An agent acts: it plans the steps, uses tools (browser, files, apps) and hands you finished work.

  • Research a topic and deliver a sourced report.
  • Create a deck or spreadsheet from one request.
  • Automate repetitive tasks across apps.
  • Coding agents like Claude Code or Codex work across a whole project.

What to check before you choose

  • One-off task or ongoing process: Genspark or Manus for one-offs; n8n or Zapier for daily processes.
  • Control: review the permissions you grant and start with low-risk tasks.
  • Credit cost: long tasks use many credits.

Prices: what is free and what is paid

Genspark, Manus, n8n and Zapier have free options with limits. n8n is free when self-hosted. Coding agents come with paid Claude and ChatGPT plans.

ToolPriceWhat you get
ChatGPTFreemiumFree with limits. Paid: Go (€8/month), Plus (€23/month) and Pro (from €103/month), Spain prices on chatgpt.com/pricing.
Claude CodeIncluded with Claude Pro, Max and team plans. Not on free chat.
CodexFreemiumIncluded in every ChatGPT plan. On Free and Go, for light tasks.
GensparkFreemiumFree daily credits. Plus and Pro paid plans.
ZapierFreemiumFree with 100 tasks a month. Professional from $19.99 and Team from $69 a month.
n8nFreemiumFree self-hosted. Cloud: Starter €20, Pro €50 and Business €667 a month (billed yearly).
CometFreeFree since March 2026 on Windows, Mac, iOS and Android. Some features depend on your Perplexity plan.
ManusFreemiumFree with daily credits. Pro from about $20 / month. Confirm at manus.im/pricing.

How to start, step by step

  1. Pick one specific, repetitive task.
  2. Try it on the free version of the right agent.
  3. Review the result carefully before fully automating.
  4. When it works, turn it into a routine.

Frequently asked questions

What is an AI agent?

An AI that performs multi-step tasks for you using tools like the browser, files or your apps, instead of only answering.

Torn between two?

Compare them side by side with clear criteria, or answer five questions and we'll tell you which fits.

Keep reading